package com.example.demo.util;

import java.security.MessageDigest;

public class Md5Util {
        public static String salt="zsf@%ag0GASI";
        private static final String hexDigIts[] = {"0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"};
        public static String MD5Encode(String origin){
            String charsetname = "utf8";
            String resultString = null;
            try{
                resultString = new String(origin);
                MessageDigest md = MessageDigest.getInstance("MD5");
                if(null == charsetname || "".equals(charsetname)){
                    resultString = byteArrayToHexString(md.digest(resultString.getBytes()));
                }else{
                    resultString = byteArrayToHexString(md.digest(resultString.getBytes(charsetname)));
                }
            }catch (Exception e){
            }
            return resultString;
        }


        public static String byteArrayToHexString(byte b[]){
            StringBuffer resultSb = new StringBuffer();
            for(int i = 0; i < b.length; i++){
                resultSb.append(byteToHexString(b[i]));
            }
            return resultSb.toString();
        }

        public static String byteToHexString(byte b){
            int n = b;
            if(n < 0){
                n += 256;
            }
            int d1 = n / 16;
            int d2 = n % 16;
            return hexDigIts[d1] + hexDigIts[d2];
        }
}
